let num = 100;

function sum(num1,num2) {
    num1 = foo(num1);
    return num1+num2;
}

function foo(num1) {
    /*do sth*/
    return num1+23;
}
export {

     sum,
     foo
}

/*export default {
    sum,
    summary:sum,
    num,
    num1:num
}*/
